|
|
|
Categories
|
|
Information
|
|
Featured Product
|
|
|
 |
|
|
There are currently no product reviews.
 ;
complete and unabridged very good quality
easy to download.
recieved in two days.
;
Awesome manual. Complete diagrams of all board assemblies as well as how to get to each part of the t.v. down to the individual screws and their locations. Get it.
;
perfect copy, im very satisfied, i was need the diagram over the powersupply and
the copy was very sharp
;
This is exactly the service manual I needed.
Complete with all schematics, partslists, PCB layouts and alignment instructions.
This manual covers both the T-4970 en T-488F Onkyo tuner.
 ;
IF PRINTED CIRQUIT BOARD WIRING VIEW WAS ONE TONE LIGHTER, THEN 5 STAR RANK HAS TO BE MY CHOISE.
20D2-S/G 21D1-S/G 21D2-S/G
DESCRIPTION OF SCHEMATIC DIAGRAM
SAFETY NOTES:
1. DISCONNECT THE AC PLUG FROM THE AC OUTLET BEFORE REPLACING PARTS. 2. SEMICONDUCTOR HEAT SINKS SHOULD BE REGARDED AS POTENTIAL SHOCK HAZARDS WHEN THE CHASSIS IS OPERATING.
NOTES:
1. The unit of resistance "ohm" is omitted. (K = 1000 ohms, M = Mega ohm). 2. All resistors are 1/10 watt, unless otherwise noted. 3. All capacitors are µF, unless otherwise noted. (P = µµF).
IMPORTANT SAFETY NOTICE:
PARTS MARKED WITH " å " ( ) ARE IMPOTANT FOR MAINTAINING THE SAFETY OF THE SET. BE SURE TO REPLACE THESE PARTS WITH SPECIFIED ONES FOR MAINTAINING THE SAFETY AND PERFORMANCE OF THE SET.
VOLTAGE MEASUREMENT CONDITIONS:
1. Voltages in parenthesis measured with no signal. 2. Voltages without parenthesis measured with 3mV B & W or Colour signal. 3. All the voltages in each point are measured with VTVM.
SERVICE PRECAUTION:
THE AREA ENCLOSED BY THIS LINE ( �� - �� ) IS DIRECTLY CONNECTED WITH AC MAINS VOLTAGE. WHEN SERVICING THE AREA, CONNECT AN ISOLATING TRANSFORMER BETWEEN TV RECEIVER AND AC LINE TO ELIMINATE HAZARD OF ELECTRIC SHOCK.
WAVEFORM MEASUREMENT CONDITIONS:
1. The colour bar generator signal of 2.0V peak applied at of Base Video Buffer Amp. Q252. 2. Approximately 4V AGC bias .
31
|
|
|
> |
|
